Captions enabled but not an option during a group call

[kdg]

Hi there, 

I was co-hosting a workshop through another user's pro account, and she has captions enabled in her settings. This shows up fine when having 1-2-1 meetings on zoom, under the three dots. However, in this group call there was no option of captions for any of us - hosts or participants. We are worried it will happen again and are puzzled as to why it works fine 121 but not in the group. 

Just FyI, she didn't allow other users to join the call before she did - there is a waiting room, if this info is relevant.